JP2009158311A - Crimping sleeve for branching electric wire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a crimping sleeve for branching an electric wire, which can be used for easily and efficiently connecting a branch line to a trunk line by an indirect live-wire operation while the trunk line is in a state of charge. <P>SOLUTION: The crimping sleeve for branching an electric wire comprises: a body which includes an exposed conductor portion prepared in an overhead distribution line stretchingly prepared and a conductor hold portion which can hold respectively in parallel an exposed conductor portion at the front edge of a branch line; and a handle part which is extended from one end face orthogonal to the axial direction of the conductor hold portion of the conductor directly or through a support and in which holding is possible with an indirect live-wire holding tool. The handle part desirably includes a portion which flexes or curves in the direction which separates from the axis of the exposed conductor portion in the overhead distribution line held in the conductor hold portion. Moreover, the support is fitted in the conductor hold portion from one end face of the body to thereby fixingly support the handle part at the body, and further desirably has a structure fixable at the front edge of the exposed conductor portion of the branch line. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a compression sleeve for branching an electric wire used for easily and efficiently connecting a branch line to the high-voltage main line by an indirect hot wire operation while a high-voltage overhead distribution line (hereinafter referred to as a high-voltage main line) is charged. About.

  When connecting a branch line to a high-voltage main line, an exposed conductor part exposed by stripping the sheath of the covered electric wire at a predetermined position of the high-voltage main line, and an exposed conductor part stripped of one end of the sheathed electric wire of the branch line In general, the wire branching compression sleeve is compressed using a predetermined compression tool after being accommodated in the conductor accommodating portion of the wire branching compression sleeve so as to be aligned in parallel with each other.

  Such wire branching compression sleeves are selectively used depending on the material of the conductor in the covered electric wire, and when the conductor is aluminum or an alloy thereof, it is orthogonal to the axial direction of the exposed conductor in the covered electric wire accommodated therein. When the conductor is copper or an alloy thereof, a C-type one is generally used (hereinafter, the former is called an H-type sleeve and the latter is called a C-type sleeve). ).

  6A and 6B are diagrams showing an example of a general H-shaped sleeve, where FIG. 6A is a perspective view, FIG. 6B is a front view seen from the axial direction of an exposed conductor portion accommodated therein, and FIG. It is a front view which shows the state which accommodated the exposed conductor part. As shown in FIGS. 4A and 4B, the H-shaped sleeve 10 accommodates a conductor having a substantially semicircular cross section from both ends in the major axis direction of the substantially elliptical section toward the center along the direction. A body 11 having a substantially H-shaped cross section in which grooves 14 and 15 are provided in parallel is provided, and the conductor accommodating portion 14 and the conductor accommodating portion 14 are connected to each other from one of the opening edges of the conductor accommodating grooves 14 and 15 via the thin portions 121 and 131 respectively. Temporary pressing ribs 12 and 13 are provided so as to be flush with the inner peripheral surface of 15. Here, the thin portions 121 and 131 are portions formed thinly along the axial direction of the conductor receiving grooves 14 and 15 so that the temporary holding ribs 12 and 13 can be easily bent. As shown in FIG. 6 (c), the conductor holding grooves 14 and 15 are provided with the temporary holding ribs 12 and 13, respectively, in a state where the exposed conductor portions 40 and 41 of the covered wires are received. , 15 is bent so as to close each of the openings, so that it can be easily gripped and compressed with a compression tool.

The indirect hot wire operation for connecting the branch line to the overhead distribution line (main line) using the H-shaped sleeve while the overhead distribution line is charged is normally performed according to the following procedure (see FIG. 6C). . In the work, the end portion to be connected to the trunk line of the branch line is previously stripped by a predetermined length.
(1) The temporary holding rib 13 of one conductor receiving groove 15 of the H-shaped sleeve is bent from the thin portion 131 to form an insertion hole through which the exposed conductor portion 41 of the branch line can be inserted.
(2) The H-shaped sleeve body is approached toward the exposed conductor portion 40 of the trunk line in a state where the H-shaped sleeve body is gripped using an indirect hot wire gripping tool such as a Yatco or Quick.
(3) The temporary holding rib 12 of the groove edge 14 is bent in a state where the exposed conductor portion 40 of the trunk line is accommodated in the other conductor accommodating groove 12 of the H-shaped sleeve, and the H-shaped sleeve 10 is hooked on the trunk line.
(4) The exposed conductor portion 41 at one end of the branch line is inserted into the branch line insertion hole formed in advance in the H-shaped sleeve that is hung on the trunk line, and this position is about 30 cm away from the H-shaped sleeve 10. Lightly grip the branch line and the trunk line with an indirect live wire gripping tool such as a tongue so that the branch line does not fall out of the H-shaped sleeve.
(5) Using a predetermined compression tool, compress the outer periphery of the H-type sleeve body in a state where the exposed conductor portions of the main line and the branch line are accommodated a predetermined number of times, and securely connect the main line and the branch line via the H-type sleeve. To form a branch connection.

  FIG. 7 is a perspective view showing an example of a general C-type sleeve used when the conductor is a covered electric wire made of copper or an alloy thereof, and FIG. 8 is a perspective view showing a modification of the C-type sleeve. is there. As shown in FIG. 7, the C-shaped sleeve 20 has a conductor accommodating portion 21 penetrating at both ends at a substantially center of a substantially elliptical cylindrical body having a predetermined length, and an opening 22 of the conductor accommodating portion 21 on a side surface. Is formed in such a manner that the exposed conductor portions of the two covered electric wires to be connected can be accommodated in parallel along the conductor accommodating portion 21. Further, in the modified example of the C-shaped sleeve shown in FIG. 8, there are provided two conductor accommodating portions for accommodating the exposed conductor portion by the trunk line and the branch line, and the trunk 23 is provided for the exposed conductor portion of the branch line. 7 is different from the general C-shaped sleeve shown in FIG. 7 in that a through-hole (conductor accommodating portion) 26 into which this can be inserted is formed.

When connecting a branch line to a trunk line by an indirect hot wire operation using a C-shaped sleeve including such a modification, the conductor accommodating portion 21 of the C-shaped sleeve (or the same as the H-shaped sleeve) (or 24) is hooked to the exposed conductor portion of the trunk line through the opening 22 (or 25), and the exposed conductor portion of the branch line is connected to the conductor accommodating portion 21 (or 24) using the indirect hot wire gripping tool as described above. And the outer periphery of the C-shaped sleeve is compressed using a predetermined compression tool.
JP-A-9-35769 JP 2001-325999 A

  However, in the conventional compression sleeve for branching electric wires, when it is hooked on the main line, it is easy to swing due to the influence of wind, etc. It was difficult to insert a branch line. In addition, the exposed conductor portion of the branch line can be accommodated in the conductor accommodating portion of the wire branch compression sleeve, and the main line and the branch line can be gripped lightly using an indirect live wire gripping tool at a position slightly away from the sleeve. Even if the branch line does not fall out of the cable branch compression sleeve, the cable branch compression sleeve is only supported in an unstable state in the air by these two wires, so that it is also affected by the wind. It is easy to move, and it is difficult to operate the long indirect hot wire tool with the compression tool attached to the tip and grip the wire branch compression sleeve with the compression tool, and the compression work takes time. there were.

  Accordingly, the present invention provides a compression sleeve for branching an electric wire that can be used to easily and efficiently connect a branch line to the main line by indirect hot line work while the main line is in a charged state in order to solve the above-described problems. For the purpose.

  According to the present invention, the object is to provide a fuselage having a conductor accommodating portion capable of accommodating in parallel a conductor exposed portion provided on a stretched overhead distribution line and an exposed conductor portion at the end of a branch line, and the conductor A wire branch compression comprising: a grip portion that extends directly or via a support portion from one end surface orthogonal to the axial direction of the conductor housing portion and can be gripped by an indirect live wire gripping tool. Accomplished by a sleeve.

  The grip portion has a shape as long as it can hold the wire branch compression sleeve containing the exposed conductor portions of the trunk line and the branch line in the conductor housing portion with an indirect live wire gripping tool and keep it in a fixed posture so as not to swing. There is no particular limitation on the structure, but when the exposed conductor portion of the overhead distribution line is accommodated in the conductor accommodating portion, the conductor accommodating portion includes a portion that bends or curves in a direction away from the axis of the exposed conductor portion. preferable. By forming such a bent or curved portion, the grip portion of the wire branch compression sleeve can be gripped by an indirect hot wire gripping tool so that the stretched trunk line does not become an obstacle.

  The support part is provided with a support part at one end of the handle part, and is fitted into the conductor housing part from one end face of the body, and the handle part is fixedly supported to the body. . In this case, it is preferable that the support portion further has a structure that can be fixed to the end of the exposed conductor portion of the branch line. With the support portion having such a structure, it is possible to hold the grip portion with an indirect live wire gripping tool and hold the wire branch compression sleeve of the present invention in a fixed posture so as not to swing, and the wire branch. Can prevent the branch line from coming off from the compression sleeve.

  According to the present invention, the wire branch compression sleeve is provided with a handle portion, and when the main wire and the branch wire are accommodated in the conductor accommodating portion and then compressed by the compression tool, the wire branch compression sleeve is indirectly attached. Since it can be held and fixed with a live wire gripping tool, the wire branching compression sleeve does not swing due to the influence of wind, etc., and can be gripped and compressed easily and efficiently by the compression tool. .

  Hereinafter, embodiments of the compression sleeve for branching electric wires according to the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited to the following embodiments. In addition, in the following attached drawings, the same code | symbol is attached | subjected about each same or common part, and the overlapping description is abbreviate | omitted below.

[Embodiment 1]
FIG. 1 is a perspective view showing an embodiment of a compression sleeve for branching electric wires according to the present invention. In this figure, an electric wire branching compression sleeve 1 according to the present invention is an H-shaped sleeve 10 whose basic structure has been described in the background art, and includes two conductor receiving grooves 14 and 15 provided in parallel to a body 11 thereof. A handle portion 2 is provided in the middle of the conductor receiving grooves 14 and 15 on one end face perpendicular to the axial direction. Since the H-shaped sleeve is as described above, further detailed description is omitted here.

  The handle portion 2 includes a first member 2a extending substantially perpendicularly from the end surface of the conductor 11, a second member 2b erected substantially perpendicular to the tip of the conductor 2 and away from the axis of the conductor housing portion 14, The second member 2b is erected substantially at a right angle from the tip of the second member 2b. The first member 2a and the third member 2c are substantially parallel to each other, and have a stepped shape. The handle portion 2 may be formed by joining these members 2a to 2c, or may be formed integrally. Further, the angles formed by the first member 2a and the third member 2c of the second member 2b are substantially right angles. However, the present invention is not limited to this, and any angle can be used as long as it is away from the axis of the trunk housing portion 14. Can be set to angle. By forming such a bent portion, the handle portion of the wire branch compression sleeve can be gripped by an indirect live wire gripping tool so that the stretched trunk line does not become an obstacle. In addition, although the example of the handle part 2 which consists of three members 2a-2c was demonstrated here, the number of members and each arrangement | positioning are not limited to this example, It can determine suitably. For example, the first member 2a or the third member 2c may be omitted, and the first member 2a or the third member 2c may be formed in a substantially L shape including two members, or may be formed in a linear shape using only one member. In the case of the latter, it is good to attach to the end surface of the trunk | drum 11 with the above arbitrary angles with respect to the axis line of the trunk | drum accommodating part 14. FIG.

  Each of the members 2a, 2b, and 2c can have an appropriate cross-sectional shape. For example, each tool 2a, 2b, and 2c can be securely gripped by using any kind of indirect hot-line gripping tool such as a so-called Yatsuko or Quick. The portion having a cross-sectional shape suitable for gripping can be appropriately disposed, but preferably, as shown in FIG. It is good to form in the ship shape which has a notch and has a mutually parallel plane. Thereby, any part of the handle part 2 (2a to 2c) can be reliably gripped by these indirect live-line gripping tools without combining the parts having a plurality of cross-sectional shapes as described above. .

  The handle 2 can be attached to one end surface of the body 11 by a known method such as adhesion, welding, or screwing. Moreover, the attachment position of the handle part 2 is not limited to the position of the approximate center of one end surface of the body 11 as shown in FIG. 1, and the compression sleeve 1 for electric wire branching of the present invention is hooked on the main line. In this case, it can be attached at an appropriate position where the presence of the trunk line does not hinder. For example, when the handle portion 2 is constituted by the second member 2b and the third member 2c, the handle portion 2 can be attached to the lower end side toward the end face of the body 11.

  When connecting the branch line to the trunk line using the compression sleeve 1 for branching the electric wire of the present embodiment, the exposed conductor part 40 of the trunk line W1 is accommodated in the conductor accommodating part 14 of the H-shaped sleeve 10 by the method described in the background art. Then, the exposed conductor portion 41 of the branch line W2 is accommodated in the other conductor accommodating groove 15, and the temporary holding sleeve 13 is bent to close the opening of the conductor accommodating groove 15 (FIG. 2). reference). Alternatively, the exposed conductor portion 41 of the branch line W2 is accommodated in the conductor accommodating portion 15 in advance and the temporary holding rib 13 is bent, and if necessary, known means such as welding the tip of the exposed conductor portion 41 of the branch line W2 Thus, the H-shaped sleeve 10 that is temporarily fixed to the inner peripheral surface of the conductor accommodating portion 15 and that temporarily fixes the branch line W2 can be hooked on the trunk line W1. Thereafter, the outer circumference is compressed using a predetermined compression tool in a state where the handle portion 2 is held by an indirect hot wire holding tool and the H-shaped sleeve 10 is held in a fixed posture so as not to swing, and the branch line W2 is compressed. Connect to main line W1. After the compression work is completed, the base part of the handle part 2 is cut with an appropriate cutting tool, and a predetermined cover is attached to the branch connection part formed in this way, thereby completing the connection work of the branch line to the main line. To do.

In the first embodiment, the handle portion 2 is directly attached to the body 11, but a support portion may be provided at one end of the handle portion 2 and attached to the body 11 via the support portion. In Embodiment 2 shown below, the handle portion includes such a support portion.
[Embodiment 2]
FIG. 3 is a perspective view showing another embodiment of the compression sleeve for branching electric wires of the present invention. FIG. 4 is a perspective view of the handle portion shown in FIG. 3 and a support portion fixed to one end thereof. In the embodiment shown in FIG. 3, the handle is provided via a support portion 3 that is fitted and fixed in the axial direction in one conductor receiving groove 15 provided in the body 11 of the H-shaped sleeve 10 having the basic configuration described above. Part 2 is attached. 3 and 4, as the handle portion 2, a handle portion having a shape and structure basically similar to that of the handle portion 2 shown in FIG. 1 is used for convenience of explanation.

  As shown in FIGS. 3 and 4, the support portion 3 in this embodiment includes a curved portion 3 a obtained by bending a conductive strip-shaped metal flake with a predetermined radius of curvature, and in a direction in which both ends thereof are separated from each other. It is a leaf spring having a substantially Ω-shaped cross section composed of extended leg portions 3b and 3c, and both end portions of the curved portion 3a including the leg portions 3b and 3c are brought close to each other so as to be separated from each other. A restoring force (spring force) acts, whereby the bending portion 3a returns to the original shape shown in FIG. Further, the leg portions 3b and 3c are elastically deformable in the outer peripheral direction of the bending portion 3a at the base portions with both ends of the bending portion 3a, and increase the angle with the outer surface of the bending portion 3a. By rotating and deforming the leg portions 3b and 3c, the portions near both ends of the bending portion 3a can be further bent (see FIG. 3). One end portion of the curved portion 3a may be provided with a flange extending outward from the entire circumference or a part of the outer surface thereof. The conductive metal flakes constituting the support portion 3 are not particularly limited in kind, but preferably aluminum or an alloy thereof as in the case of the H-shaped sleeve body 11. In addition, it is preferable that the thickness of the curved portion 3 a in the support portion 3 is at least thinner than the interval between the parallel surfaces of the first member 2 a having a cross-sectional ship shape in the handle portion 2.

  As shown in FIG. 4, one end (free end) of the first member 2 a constituting the handle portion 2 is fixed to one end surface of the bending portion 3 a in the support portion 3 described above. When the thickness of the curved portion 3a is made thinner than the interval between the parallel surfaces of the first member 2a having a cross-section ship shape, the parallel surface on the lower side toward the drawing of the first member 2a is the inner circumference of the curved portion 3a. When the first member 2a is fixed to the curved portion 3a so as to be substantially flush with the surface, a part of the former end portion protrudes upward from the outer peripheral surface of the curved portion 3a toward the figure. With such a configuration, when the support portion 3 is fitted in the conductor receiving groove 15 of the H-shaped sleeve 10, the portion protruding from the curved portion 3 a of the first member 2 a serves as a stopper, and the support portion 3 no longer accommodates the conductor. It can be prevented from entering the groove 15. Moreover, when providing a collar piece in the end surface of the curved part 3a in the support part 3, while fixing the 1st member 2a to this collar piece, the penetration to the conductor accommodation groove | channel 15 of the support part 3 is controlled with this collar piece. be able to.

  When the wire branch compression sleeve 1 according to the present embodiment is used, before it is attached to the trunk line, the exposed conductor portion 41 of the branch line W2 is accommodated in the conductor accommodation groove 15 and fixed so that the tip does not fall off. be able to. First, the exposed conductor portion 41 of the branch line W2 is accommodated in the one conductor receiving groove 15 of the H-shaped sleeve 10 in a state where the tip of the exposed conductor portion 41 is passed through the opening of the curved portion 3a in the support portion 3. The two leg portions 3b and 3c of the portion 3 are fitted into the conductor accommodating groove 15 from one end side in the axial direction of the conductor accommodating portion 15 in a state where the two leg portions 3b and 3c are pinched by fingers and close together. Thereafter, when the finger is released from the leg portions 3b and 3c, the bending portion 3a comes into contact with the inner peripheral wall of the conductor housing portion 15 to restore the original shape and urges the leg portions 3b and 3c to push it open. At the same time, the legs 3b and 3c are rotationally deformed so that the angles formed by these and the outer surface of the bending portion 3a are increased, and the bending portion 3a is further deformed so as to further enclose and hold the exposed conductor portion 41. Become. Thereby, the support part 3 is reliably fixed to the front-end | tip of the exposed conductor part 41 in the state fitted in the said conductor accommodating part 15, As a result, the falling-off | omission from the conductor accommodating groove 15 of the exposed conductor part 14 can be prevented. The support portion 3 is further pushed into the conductor receiving groove 15, and the handle portion 2 is fixed to the body 11 in a state where the end portion of the handle portion 2 fixed thereto is in contact with the end surface of the body 11 of the H-shaped sleeve 10. After fixing and supporting, the temporary holding rib 13 is bent from the thin portion 131 to close the opening of the conductor receiving groove 15.

  Next, in a state where the handle portion 2 is gripped with an indirect hot wire gripping tool, the H-shaped sleeve 10 is brought close to the exposed conductor portion of the trunk line W1, and the exposed conductor portion 40 of the trunk line W1 is accommodated in the conductor accommodating portion 14. Separately, the temporary holding rib 12 of the H-shaped sleeve 10 is bent from the thin portion 121 using an indirect hot wire tool, and the H-shaped sleeve 10 is hooked on the trunk line W1. At this time, the H-shaped sleeve 10 can be held in a fixed posture so as not to swing by holding the handle portion 2 with the indirect live-line gripping tool. Work becomes easy. Thereafter, the appropriate position of the base portion of the handle portion 2 is cut, and a predetermined protective cover is attached to the branch connection portion formed in this manner, whereby the connection work of the branch line to the trunk line is completed.

[Embodiment 3]
FIG. 5 is a sectional side view occupying still another embodiment of the compression sleeve for branching electric wires of the present invention. In the present embodiment, a modified example of the C-shaped sleeve shown in FIG. 8 is used as the wire branch compression sleeve, and the handle portion 2 having a structure basically similar to that shown in each of the above embodiments is A support portion 3 is provided at one end.

  The support portion 3 in the present embodiment has a bottomed cylindrical shape that can be fitted into the conductor insertion hole 26 of the C-shaped sleeve 23. One end of the handle portion 2 is fixed to the outer surface of the bottom portion, and the inner portion of the cylindrical portion is fixed. The peripheral surface is tapered from the opening toward the bottom. Further, a flange portion 3d is provided on the outer peripheral surface of the support portion 3 substantially in the middle thereof.

  When using the compression sleeve for branching electric wires of this embodiment, the support portion 3 is fitted in advance from one end of the conductor insertion hole (conductor receiving portion) 26 and then the exposed conductor portion 41 of the branch line W2 is a conductor at the tip. You may insert so that it may insert in the bottomed cylindrical support part 3 from the other end side of the insertion hole 26, and the exposed conductor part 41 of the branch line W2 is inserted in the conductor insertion hole 26 similarly to the case of the said Embodiment 2. The support portion 3 is inserted into the tip of the exposed conductor portion 41 protruding from the one end side, and the exposed conductor portion 41 is pulled in the pulling direction, and the cylindrical portion of the support portion 3 is extended to the position of the flange 3d. It may be fitted into the insertion hole 26. In the latter case, the tip of the exposed conductor portion 41 and the support portion 3 can be fixed as necessary by a known method such as adhesion, soldering, crimping, or compression.

  Next, the C-shaped sleeve 23 is brought close to the exposed conductor portion 40 of the trunk line W1 in a state where the handle portion 2 is gripped by using an indirect live wire gripping tool, and the exposed conductor portion 40 is passed through the opening 25 in the conductor receiving groove 24. It is housed in and attached to this. Thereafter, the C-shaped sleeve is gripped by the compression tool while the grip portion 2 is gripped by the indirect live wire gripping tool, and the outer periphery thereof is compressed, so that the main line and the branch line are securely connected. Then, an appropriate position of the base portion of the handle portion 2 with the support portion 3 is cut with an appropriate cutting tool and a protective cover is attached, and the connecting operation of the branch line to the main line is completed.

  As described above, the wire branching compression sleeve according to the present invention has a handle portion directly on one end surface orthogonal to the axial direction of the trunk housing portion in the trunk or on one end in the axial direction of the trunk housing portion via the support portion. In the operation of connecting the branch line to the main line, the cable branch compression sleeve can be held in a fixed posture with the grip portion held by the indirect hot wire gripping tool. The compression work of the compression sleeve can be performed, and the work efficiency is improved. In addition, when the exposed conductor portion of the branch line is temporarily fixed to the conductor accommodating portion of the compression sleeve for branching the electric wire in advance and then hooked to the trunk line, a handle portion having a support portion that can be fixed to the exposed conductor portion of the branch line is provided. By using it, the branch line can be temporarily fixed, so that a temporary fixing operation by a known method such as welding can be made unnecessary.

It is a perspective view which shows one Embodiment of the compression sleeve for electric wire branching of this invention. It is a perspective view which shows the use condition of embodiment of FIG. It is a perspective view which shows another embodiment of the compression three part for electric wire branching of this invention. It is a perspective view which shows the handle part and support part which are shown in FIG. It is a cross-sectional side view which shows another embodiment of the compression three part for electric wire branching of this invention. It is a figure which shows the general example of an H-shaped sleeve. It is a perspective view which shows the example of a general C-shaped sleeve. It is a perspective view which shows the modification of a C-type sleeve.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Compression sleeve for electric wire branch 2 Handle part 3 Support part 10 H-type sleeve 11 H-type sleeve conductors 12, 13 Temporary holding rib 121, 131 Temporary holding rib bent part 14, 15 Conductor receiving groove 23 C-type sleeve (conductor)
24 Conductor receiving groove 26 Conductor insertion hole

Claims (4)

  A fuselage having a conductor accommodating portion capable of accommodating in parallel the exposed conductor portion and the exposed conductor portion at the end of the branch line provided on the stretched overhead distribution line, and orthogonal to the axial direction of the conductor accommodating portion of the conductor. A compression sleeve for branching electric wires, characterized in that it comprises a grip portion that extends directly from one end face or via a support portion and can be gripped by an indirect live wire gripping tool.   2. The wire branch compression sleeve according to claim 1, wherein the grip portion includes a portion that bends or curves in a direction away from the axis of the exposed conductor portion in the overhead distribution wire accommodated in the conductor housing portion.   2. The support portion is provided at one end of the handle portion, and is fixedly supported to the body by being fitted into the conductor housing portion from one end face of the body. Or the compression sleeve for electric wire branching of 2.   The said support part is a compression sleeve for electric wire branching of Claim 3 provided with the structure which can be fixed to the front-end | tip of the exposed conductor part of the said branch line.

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